{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf3a425a0362bae3cb0dd2adf8e9ef4d749b83898eb5e1c59480eee1370324cbf",
    "signature": "0xa3a2de1688b4763e547db5ad4eef36a89535a7409c5b7b776fda811161919fe41ee7161848fd5cf0585dfd74daacaaf12f1517929a77f22855889b151f06cc0f1b",
    "signer": "0x4237E618b3080aA7531972090a9d132E8415ab4f",
    "userId": "438919473"
  }
}