{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "223331",
    "entityType": "User",
    "nonce": "0x532276c250a913ef8012f20b1854e067560d31736250f22133a2711d5fd53ec4",
    "signature": "0xee644159e15896613634ec6100bae688147e91b0962543fc80ad88f3029eab463786e3388a14cd887615b34c7085320be14bcb081bf4f78dd5395c7acc73ef8e1c",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}