{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375577",
    "entityType": "User",
    "nonce": "0x254da78cd73d912428ca3d9132ed65a17e7af13b2932fda03adf7b1f2005a6cb",
    "signature": "0xb9d9f891c494793ac095505e43497427a71ffac805a9490afde98bf6b83ae3e57dd5b3d4f10864d342f916ad1843bea1a45cfd4d2fb453b456a38bd545863bc31b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}