{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x668d4f2e380dc6443e570236b8a41043bb00264e18b95cde1b07ebed7c274cd0",
    "signature": "0xcbbbaa6f8d142eab8c1d57f170f0f9d8386d1fb0c362745c3f257effa2fbe8bb0724ced3971270b4ad3e6bec2b7b979b8b7376d557828392ec1e00976bb9dc841b",
    "signer": "0x4cC210D4830F5965C7442e6583C37bF6292E7695",
    "userId": "432955422"
  }
}