{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x229744f025433ec47bf1ae95915355d1ed68ab2e8eae2f333f599e81954e7d2a",
    "signature": "0x19914a0829ca27dfb813348ab18d63acf7543a81a57e150240def591b48a614f34b1e15db3a4febfde1d8a78d95dc8de3d8c099a1cb3c409b836b4a9fbecd14b1c",
    "signer": "0x10c1827D9F8a86fefB7be73e50c5492e38A43560",
    "userId": "540193249"
  }
}