{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152880",
    "entityType": "User",
    "nonce": "0x1929476e06a30dfd864b3afc26f3cd5604df676019a5efecc671a6b21b30367b",
    "signature": "0xdcc85abfaa895273bea0481abbd7646f0d243f9f9a1010a056c12b06b57a56b04eb83e748a659a8151119c9931523c1a593ec47613b54e75bbcc242b5a023f861b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}