{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489937223",
    "entityType": "User",
    "nonce": "0x180a7f7f926730c9d47e0798b043ee9f22ef3778125d41d596063c48ae9f599d",
    "signature": "0x9b20090389b6251d731c865dff133c6defe9a4ab3a2dc49aece5157544dda9fb57ef4e765bf6bb9bcb348d8514b4353f5ca037130174707115db3a885a2081be1c",
    "signer": "0xaa9597d3d2D028AC73c689f02E12E7e28A407E7B",
    "userId": "761103314"
  }
}