{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "842214964",
    "entityType": "User",
    "nonce": "0x90f391729c6188110e3806ceef870eb6b73f89b5a621a844dd65882193e46eb0",
    "signature": "0x24841cd673da64135b8d3a647ee244d09e67003e06da3d2c63f0faaa06f8a7d41a3f87b36b6b6d71c0d2f1f7b588262f41615c11872005862c221fb5e1cdefa51c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}