{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb2e4721479367332ef05c06ca5f219683162d1454999df4de5c7fd6e7cc78270",
    "signature": "0x4c99e0e810e003f841f28a7014148fa1aabc470ac608c73ca33d2371427e5c81567432c2e4888fc4f1d02bdb2f5e9a1cbf09cd07fdcda2f2335e39c95e74b3361b",
    "signer": "0xd14F1C92971A04df28F198D8a9Ed997A72a7dB86",
    "userId": "286683016"
  }
}