{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "554379379",
    "entityType": "User",
    "nonce": "0x768ede69a359d065e7ddf73bf1bf218fb62e333cbf6c3a628e604806c9dcfe1c",
    "signature": "0xed8da137aa1d118d377c41dfd15c3ffcfc70cff251acd804effc6e6f7268045f410ee8fffbb986e9ea2ece67bbda5eb105fab9ae3b7a1f1b85c00d947f8a99b91b",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}