{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x0604eb3bf8c0970b8f3f51642ea7a566aba9b1d2b8b22bb0769c09cbd5cc48a6",
    "signature": "0xc1947b05336e854cb412ba4dc0bd28d02220c3c58271d84bea77a9e53d974a92547bbc4fa73aa0896daf4d25416b2e2a6a7bf284bc3ca3f6f60193b21a2105ce1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}