{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "159159784",
    "entityType": "User",
    "nonce": "0x3cf61633ce5f25e3e12f3213beef66c460e1016af6045030807ae2d14d461b45",
    "signature": "0x6690a48e82f332c1385d870573e43c1c40195d958f56e0014f4c8562839efa50437cbcaf90f55f4834191d9dd23b0c179f57f5aecf067c49f463952425b310071c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}