{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "168269221",
    "entityType": "User",
    "nonce": "0xf23b0280b778da0977ad1ab6bc77959d43b47b32ab309a56af7f65d80170a5a0",
    "signature": "0xca663458586f3dcd5d4d83cbb9ab7d7d49ec1d104984cd865211552786756d64628c12bf04012e84196f9f58be187216e5f2ab792256bc867cd3629382a357521b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}