{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665370465",
    "entityType": "User",
    "nonce": "0xe8474950cd961c442d2a32bef67fa21f254d3814304e45482457b91af0c7b656",
    "signature": "0xdc5b86165f7ecd15f46c7b6ae7feecf27d6cdf9198712238c2255d31b6d88bdc21ac3ff637a469b913aad8a9ccc72075153a89dab233005190bef3919b3d4e4e1b",
    "signer": "0x44567269b2165376Bd13d6bECFDE4A02F3ef59AD",
    "userId": "49012201"
  }
}