{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7a185e78bfe497de7c845ff6ec05b839b78c0b9d552b2451a3bbc16c805ca50",
    "signature": "0x93ec28f4035b08e8c2d8b89e971e8c23a3680380a5883f07ddbfbde7c1f019ec7d9a51214d4a5c5b2f0ccb3a72ac8299541d4cf5297aba1e6258a73bf5ff72501c",
    "signer": "0x4D5454A391B2B967F678c28d6f8af657556ACbE0",
    "userId": "629707907"
  }
}