{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "804422713",
    "entityType": "User",
    "nonce": "0x487b12f1ced35001c25ef5f33ba37990710cb9d1ea7cbcf0b1522080f56371c6",
    "signature": "0xa8a3fe7c8d489af81e48aa62fe600e7aefd52146fa95f350aab0417a0c32173868f756e3db206834c3e1f4651d54932d3547a95e340aaefdef37d8120b0598f51b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}