{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75353",
    "entityType": "User",
    "nonce": "0x0b30889c1913a720387709c1dc2572d61557d95bd1785fc605659f18fda8489a",
    "signature": "0xcb1569050bfbb2f6e3cd880087f5b5177e53743e2c2885872c7e4bb74ae51c4a1fc1856c017afdbb9a6de7ef8e00573aa0df6dd7603eec0e9cfb0f79d242b9de1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}