{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64120",
    "entityType": "User",
    "nonce": "0x2104f64627d0c45097fe27430414e922700e73763dd07d6c9d13e160d2fda039",
    "signature": "0xae7abd7995d253e8b6b91e05d39b155579f8110fcaece31ed5269406545367fc7b9dcf934330e5e9a147ef4285305ce84a1eaece13974b1d2637e68684aae4e11c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}