{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142974",
    "entityType": "User",
    "nonce": "0x5e87b93669ee242b7b1bc05b82c75eb0d056d8a9e8a291219be6b20d7cf53b59",
    "signature": "0x972abca19956db19d3bee63af89c01bcc43ea1df1d3b9b71fc4484145fe7e7893f26c3911b3adc16547417cf5712bc62a0709fec9b2ba1d4455718a8ee02a8ee1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}