{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881191",
    "entityType": "User",
    "nonce": "0xc377d5c53795c314c6f1529efd6435e21775ca2e6bbf666e78d52c49ccf359d2",
    "signature": "0x26d4f9cd2dfd54bd2e0c8067bc60a96b71ce2537160577940cbdd9453cc650cd277f6d1e57de7e5fa69db47be594ac599defa0ddcc5e9f4671c7ecd39a36d1ac1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}