{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0xf69511b0015a8b01729eea51558337da183945858359c57e2677322f866795a6",
    "signature": "0x062dd2ba24c5a46debca302558780a4e7676730c1a1f99c60c5e1bf646d766357de042ff827a3d200fa050e301aa3178b00cf941b82b45b7d37a7bc516f281f61c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}