{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875378857",
    "entityType": "User",
    "nonce": "0xec1f1ffb7195522093dbd3dc0bcad2815c2766b403bac1aefcbfed5297b41cce",
    "signature": "0xa3fb5cdf9c6b5be75a0bf249b0b732cfa8ee388b5cd78c19ce89ade160703e950c805010462f855673b5155d30c6a4c5bfd4539a51dd0ec2932e9384c31716831b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}