{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1777978",
    "entityType": "User",
    "nonce": "0x5421963949f21dff2c2f8fe86d49804b44b002abcb0f88c7f430e46d0b78a5d0",
    "signature": "0xa590fbc5bfae1bc0258c408821a04bc24ca4ee9273e3b81b5e6202a22275c04072d409e8b566efcb879c1e391b95af2221183a1cd1c5afce9602a5cfe1fa5c041b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}