{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "763473",
    "entityType": "User",
    "nonce": "0xa25d37a905c8d3f0d38cc0408150443002b184a534d8e4adf5d002bf32d81616",
    "signature": "0xad47728082898da93c64d1c1b631d181a920ef7d8863a99f3646dcf949aeed685a66d8b9d6056450552b3e09f0c5bd4c29b6460145d1f401b19a66d2d32664331b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}