{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcc7c6bfcf1d5909932dcf19335415ddb967df1b676225e6a0f25c3146216cb20",
    "signature": "0x47adf3b46808be24548e41b9851efac7043945450ad3ac39245ee9fc69c640ef23e1156ee14b900b12f1fa20b493edcaefec3f569f20f449fb3999e048f81cd41b",
    "signer": "0x434E6E903F887d1123e2415651292ED71aC170Eb",
    "userId": "643976014"
  }
}