{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0xaa453e6202678443d276e01900306f873c9c37dfbd6b7aa85436e08bd846db93",
    "signature": "0xf7b059ce5ade4e4cb5d29d3e08208fa1a1760727aff2f260d23ab303f6548f8332cd4ed000c1616cc9dd80062b2fd1c582c941426e25a0f1a5602d40119579e51c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}