{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "373394983",
    "entityType": "User",
    "nonce": "0xd0f88602bcf27f6988cd0b33fe8a549c60d2a4aeb916af7d29e03163188a984c",
    "signature": "0xbdc5ffa4498728286b6394e64fcad4f023bcd6f326c24516c993d084f582fe181b58add101883d870de1841b2b715309100c52950d3ed7d38e3de0119df3480b1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}