{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "264832",
    "entityType": "User",
    "nonce": "0xaa7ec2d86d929084497c3c92d67484420df0de0a67eac39648de6a8d305927e7",
    "signature": "0x74ac373e0b425e40eee08dc902eeb99b0bf1f9759247b4c05bacfc00e23640e303a9155e1d47898d194e252c9d9741401bfb4bfc5af13fed84cdd3a8e5c00d391c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}