{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2505a8a3f51f29412ef5b3a9c1d8e2f8ee159ce5b1931e87770d0b36e86777da",
    "signature": "0x7fb041d89fd032f155270190470e623ea9ee9f8ed294955ad4a8ae845532c5df653bf9ca3c300ee364c66ff8f05850c3e9095570e44fc7e55958c693220a5cba1c",
    "signer": "0x4987c7c4e3b9B680fA93a207d759f37A8B34C2f3",
    "userId": "464840614"
  }
}