{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8aef60d51e63f453d585986fcadf78c0df2d700f0a64cede61f8626afac482e2",
    "signature": "0x1f7cf00e1ab1095f256b1f95ec4ece82ef0c76cbb33f569e71b84e9d7bc247c05e0af6e9bc1ec2ef24afcbd15273137cc83186a00c100ee73491e102497b85781c",
    "signer": "0xd103b6b21260dC673848EdeF10CbfDF1FF1baE00",
    "userId": "962904818"
  }
}