{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a82d621514d9a1e9bcf8314e51ac5f4b47d1ffb53f6fdc0bedb4310c14b1fe7",
    "signature": "0x64cf125acb196e94d5760dddfc1c02d0525caa69c50e80d7f20c82cade16c1c421ba430f0148a4e4d3883f5e5a63473d674972e581e042905ef4c6e1876b164f1b",
    "signer": "0x2790b301ef46dCE780FBaB746d46c8c845E7E22a",
    "userId": "696399278"
  }
}