{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "906913",
    "entityType": "User",
    "nonce": "0xe5213400319f2b87aacb795ca35aa192b5c39d66dd8163b57295f3ee095b38ca",
    "signature": "0xed324ca64261ee6c26733a3d1dcd47e7d09777545f69df7f25304c3939e260a5505ea78e123e2b8a1838e52a14cdde1b189fbe1a3db0eb8ee5c3ab6389669b511c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}