{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1824555",
    "entityType": "User",
    "nonce": "0xe8134f1f15392a0d646fd0365063a2815695d56a7e986aa505dc89405d72e561",
    "signature": "0x5b7a014f9e6ebae81eec6fd868b32d57cf94cc847a40451f98ada08e1b2caa7d619c5a6b493923ed74f6e50aa142e560d80d79bb914c03144050fb9bdc8b0a9d1c",
    "signer": "0xb9160bee52F73DAB98D7cB3210d24Be59194CaC4",
    "userId": "319969"
  }
}