{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124649",
    "entityType": "User",
    "nonce": "0x55aa86ee7ef4cac5f4a9a9c635c7505b56a1bc4bf06704b6d93cc984e0d4d93b",
    "signature": "0x97ca6b9b121241691ef23b351e82e9b43d2dda19d09a7d905939ed6cf72a212e1e7577fb086d0b1b85f70bb39d08c2d8b81b4a935637471736fc9535c326e0361b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}