{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874277249",
    "entityType": "User",
    "nonce": "0x511bf0bd57254e62a753e8be66d7a6c62d9ff3b98ed6406926fefdaed57a26c5",
    "signature": "0x7d865d9acaa0bd36ed5c609d7026ba111eee26790e52cc418fda72dbf1e027314d221dfb561a70f0b377dc1adf3bdc304067b99c00c971eaf206f5f0ff6533681c",
    "signer": "0x03de1549Cb5f10b9cb8844eaCC9030C1852FDdd2",
    "userId": "979358380"
  }
}