{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7ab0bda692cbbffad7c34065c9fac1d7da6752c8e73b2e1a9a1ccd1a84c68f72",
    "signature": "0xbf1ae9ed3ddda682c87cb7e0af02035938af8412348c0ba4a1d210499eba401b0ba69a2136705932f349e52738c472cf6bca1900b1a652266d20ae94ada4a95c1b",
    "signer": "0xd058Df91627cEe362CD4c5Cd9669b6bC4DaD6D0D",
    "userId": "883005562"
  }
}