{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299279",
    "entityType": "User",
    "nonce": "0x23ddbb6c5f0974a99d52d34dd0f718e9403ff3b5bc85a4226b1d20b49de838d0",
    "signature": "0x14b0e5a3bbb134718c79ccbf2dcbafd8fee7a84eb19ae0b5e9e2649bbcddca3b4053a9e337c5fbba1889ee4e3853f2510d27a3e3f137dfa0eec0fa1d99ba7bac1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}