{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "153526542",
    "entityType": "User",
    "nonce": "0xb3c165cf9caadfaff1bd82ebf51176496323fceb5fdba7dd1dcb5403095f26d3",
    "signature": "0xa9354e980000ce7d876c6cb00e61260104e7c39d35bc881cd1b762dbc0c2bbd4060baba1a62f13843016d0188ea4a5836a3add2abcfc10bb067e1c7bf9cf339d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}