{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545790265",
    "entityType": "User",
    "nonce": "0x006e8d19790dfd697eaa5840514c477c6d00cf3aff5bafb2b2e83bdf30d9e1cf",
    "signature": "0xf7fb5f0e6d83efb408d17c8b8d3b5f3b3d93a1c234cce741a69268cead7f7a987d38d7e9821774b69d395eba14583f399c2343c02700f5dde9d7badc3dbb94f81c",
    "signer": "0x4f046eBEA1DfCcc5b405945f30bB06749d4978C3",
    "userId": "506555278"
  }
}