{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0xceb9fabb94aaabb0bc5362ab7c5fa557a2731d1985df2cc27cdaa0dd04362c42",
    "signature": "0x9e0e04ef4f0f8a6285edd8ac8dc4dd120882db9178a128e0dd218937e97354a446dee24a14ad10713f2326ec949833b2d7c95bb5ad7d8caf3a34dd9907d816891c",
    "signer": "0xC90e14007305577f04e5F4f5542B2191bB2c7394",
    "userId": "1856608"
  }
}