{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "496881849",
    "entityType": "User",
    "nonce": "0xc66b148ee8cf0d1cf27ab14f319156d000781ad3db78b69def023e9ff6b8867e",
    "signature": "0x9380a87a0105ff987ee5e8574443754e6ace5e3887033ac17964aed9aa38454640c3019394a73c9b086042ef38f900cf0fa1f15fbac85c64fd27c8f9a566df8c1c",
    "signer": "0x2e337983C3bc2408D1984b86c2A2E1dD18A3AB7f",
    "userId": "440530963"
  }
}