{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x272c6cec078ba701183f41d7dc66dfa070c8512587ac8d6977fc3d06fa03e258",
    "signature": "0x3e5b6723e5820ca1f20e6fe7a9b93cdb2117e46e22e4d5bf3504010d20f71fb400dfa9b1c3af4b0c11b74c7fec079fa446458553abd6d705eb11de3c55c9065e1c",
    "signer": "0x9F1ba5048fD5fF69319Fd398E4e181b46451aB6b",
    "userId": "539136535"
  }
}