{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x3884eba3d8600febba36fdaefdcefd0e61f56e4c7102f342a0c0e5093c5d3b35",
    "signature": "0x7944ed7621959c0913a8f3f80131215bd6dde81dc21d2c4f4a13ad5c0a82689706d68ee87e84b1a6e2e547db7e7a03eaba4531ee26acd38a0ecaed6fa791b0f81c",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}