{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "25895518",
    "entityType": "User",
    "nonce": "0x579b928fdfa29b6f00695c9319bdc647f06889271d72765c8f53e76d6421a124",
    "signature": "0x2702f260911c1357ce876bfc2d2b1e1639540c155ab2413e734e7ff9346e415e23b37501986992ba92ca3c7c805664707aea9f1ea1104c789951889eaade5dcf1c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}