{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "470005",
    "entityType": "User",
    "nonce": "0x4f5f0958c14abb74661f0a62d08de45aeda78a2dd2c63f749212583aba73b2ea",
    "signature": "0xc7b94fd742415dd8104b1a5831004e95222deb981b9c132392b793243c083caf6ba7771cb623bdba02fa325de3f4bf828ac2ed5bb31202f29b0828056409f8e81c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}