{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc4970b73288ee1e0209a0a42fd1381b5f1454de2abf8ec8a04e08be43b57caa7",
    "signature": "0xa45a56f32c0b3c9847189cfa538dc8650d6d323095a15babe0fafb643563596645c8ad3443b0374d9e182f67e074d9683d790fadf7b9e1bfc26edfb93cf69aba1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}