{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57021",
    "entityType": "User",
    "nonce": "0x03a2cdc38476cb8208773b92a154e3d04a688ef84f8b52b57cb357a1dd7c7f1c",
    "signature": "0x2c2d2cc147afb2565a3aacd71aa6a64d7bb68472322f4f2fa34466df81e04a6d134c6698288374836edb209107d8cffaa6b41581543f73bd6c39b0e4fef008361b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}