{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "172280",
    "entityType": "User",
    "nonce": "0x792ffa120cd09f3af486644ac34764f43cc5a14d8b95e9f5faaf1bd84d27d586",
    "signature": "0x721076503aa1924d54e9b84cf9f1e58053d5a74dc3323c5a3dd7e7e4f55fc99579a35f23db9b4b0d5f70f1ed78cca6cb86cb939b1a09918aa8a09aedc270e7051b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}