{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x885e7578c2300bc93e1f530aa37e8ecc893b050c59fe48c0515b4caef5f38f24",
    "signature": "0xb4c5797b4e50df9f589194a9b43325e2a3f21b81352e13bdd5bd4fb6eb9d6b090b3b0048d5c89fd175a5f2cdf9e7ec28beee791168af8d5fe0613abd42cd7fd41c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}