{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfcde4ebfb654dcec932af6ad074774a0854b78f1b5cac41d46cca1435e38612f",
    "signature": "0xff775e4836e579a37248fdbbe3318eff4469043ef8a3f10fb0f0df8f813eb98a059e1145bbbae9c8c6e825e2faae1ccbb9bcb57194d46fe6fb10dd4fff2509951c",
    "signer": "0x85443D224f6B366da911c15C010ddB754b929fbE",
    "userId": "587956617"
  }
}