{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121616299",
    "entityType": "User",
    "nonce": "0x93906380803e815f3d7b82f5037df070d9cc98590c2590331f913c081512e295",
    "signature": "0x24c74f38622dc58e85866e7c48475b9380c735d7cf42149175eba100db88297422c4179f17c5b0f8575d939ac63422a51aa6cdf8ce5e663a703b86f52b28331f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}