{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb8509f8b229217b16d370d830e51345bfdfb1cb9003523d1772bb227dd481312",
    "signature": "0x5ee8634d2917a2a21c2362ef6494f6893b396e3ccc725b75af28eb1f77006dd2258750f82b2340705d4a2041d5d2ec254e39a8edbb688d0130bc607470b879651c",
    "signer": "0x562a03Ac936CA6e708f3E95519ECB19bab32cdf0",
    "userId": "852681794"
  }
}