{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb9493a96d718a17ca7029fd02df1ee435310fcfa3a04b64a08a3100d4292f1d3",
    "signature": "0x110b2e82e4ed4b231b117f6f2acd24e84ba82d6c7f517f97e4044cfc1f6017802001b474bce9c2a87ca0755a06eaded29aaadd0fdabb14e71d83056b432498871c",
    "signer": "0x7870B18271193ffCd07c82d5eEE8CB967B2178FB",
    "userId": "336936951"
  }
}