{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50278306",
    "entityType": "User",
    "nonce": "0xa4e373fb5926d8d566baa25a9aaf4908d27999913214b23339d6fc809ae8954d",
    "signature": "0x2342e7e77ae7d0a12c0f2cb4a0479ac0613519d0de96e94edefbb9c449d10e7f56a6e6dae8f77ffdb02e2f239511039bfe7c336c86e0b016bfc5291c752871be1c",
    "signer": "0x9698A898Ed554B831a7BB69972E1B05eCC560430",
    "userId": "967510490"
  }
}