{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330374208",
    "entityType": "User",
    "nonce": "0xb1699d64a202ea6b2e08cf188beae366304b3bfc0564a0b86b1a8b4c601df69c",
    "signature": "0xa2e6973c8420161efe9455f7fe501a403a0bd40bd00a30871c70b9b4b3fa8a333d4de33c59b02b6078da4b6066019f33099e0ed8f325b2269e5251b25f9ef53d1c",
    "signer": "0x81b1B45A33ac76924D6f674Fc7d0918AC3E9F9Ec",
    "userId": "845684964"
  }
}