{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57768",
    "entityType": "User",
    "nonce": "0x1aa9fc97a82722bf4b50326448d6bcc37155975819916c1feacd4458ec42b3f9",
    "signature": "0xcc912acd6365318f9cc091485a1de7a9bae7bacb81cbc97ff03e74838afeb9310e93a8ecff5689a86e4d63779f01ed076c798fdddefa6999356b2d20b24389621b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}