{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x05389697baa29adbb2b4ef75dcd99d76779f81f27c3599a34c5f860d07ec7249",
    "signature": "0x3041f6daa32dd17bc74c98147215dbebf30606ac901e86ef289ac2c7228e739144b6bb1a68bfb264bb129e1f13381cdc15b805191f81f229a2a5e1f2a32c70791c",
    "signer": "0xa9fe1c9E5623FA85000577B1dC63d64D5b81Dd57",
    "userId": "605573660"
  }
}