{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390699",
    "entityType": "User",
    "nonce": "0xfc5911ffe8482544e5c288679150b86672364781e6631c3b1ceac17b7d255ed6",
    "signature": "0x2102c7beabdad150ac7a37c47ce53f673949f5c2afa5ecabc2928699fdc8c2454ac9b1d37b851ac6cac3d48fe60a4bd8cba91264bf4d0acf0050e49c7c292ecb1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}